The Box

Say you're a company that invented a multi-dimensional travel device. A year after your boss disappears using this device, someone that looks like him comes out of it. He claims he doesn't know where he is, does not recognize anybody and talks about non-existent wife and child. Do you A: immediately understand is he not from this universe. B: forget that your device allows people to cross universes, insist he lost his memory, shoot his ex-gf, kill his friend and accuse him of being an imposter?